EP 0642673 B1 19990512 - METHOD AND ARRANGEMENT FOR MEASURING THE CONDITION OF A RECEIVER ANTENNA
Title (en)
METHOD AND ARRANGEMENT FOR MEASURING THE CONDITION OF A RECEIVER ANTENNA
Title (de)
Methode und Anordnung zur Messung des Zustandes einer Empfangsantenne
Title (fr)
PROCEDE ET SYSTEME DE MESURE DE L'ETAT D'UNE ANTENNE RECEPTRICE
Publication
Application
Priority
- FI 9300565 W 19931229
- FI 925954 A 19921230
Abstract (en)
[origin: US5574981A] PCT No. PCT/FI93/00565 Sec. 371 Date Aug. 30, 1994 Sec. 102(e) Date Aug. 30, 1994 PCT Filed Dec. 29, 1993 PCT Pub. No. WO94/16336 PCT Pub. Date Jul. 21, 1994A method and an arrangement for measuring the condition of a receiver antenna at a base station of a TDMA radio system. The method includes a) transmission of a radio frequency measuring signal through an antenna line towards the antenna, b) measurement of the strength of a measuring signal component reflected back and passed along a predetermined measuring path, c) transmission of the measuring signal directly towards the receiver to the measuring path, d) measurement of the strength of the measuring signal transmitted directly along the measuring path. The measurement is performed in a time slot allocated for a radio test loop, due to which it is possible to utilize frequencies actually used for traffic.
IPC 1-7
IPC 8 full level
G01R 27/28 (2006.01); G01R 27/06 (2006.01); G01R 29/10 (2006.01); H04B 17/00 (2006.01)
CPC (source: EP US)
G01R 29/10 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9416336 A1 19940721; AT E180063 T1 19990515; AU 5701294 A 19940815; AU 672468 B2 19961003; DE 69324916 D1 19990617; DE 69324916 T2 19991021; EP 0642673 A1 19950315; EP 0642673 B1 19990512; FI 92260 B 19940630; FI 92260 C 19941010; FI 925954 A0 19921230; JP 3084065 B2 20000904; JP H07504511 A 19950518; NO 307805 B1 20000529; NO 943193 D0 19940829; NO 943193 L 19941028; US 5574981 A 19961112
DOCDB simple family (application)
FI 9300565 W 19931229; AT 94902793 T 19931229; AU 5701294 A 19931229; DE 69324916 T 19931229; EP 94902793 A 19931229; FI 925954 A 19921230; JP 51571094 A 19931229; NO 943193 A 19940829; US 28457894 A 19940830